Cassie Ventura testified against Sean "Diddy" Combs in a federal trial, detailing alleged abuse and her role as a star witness in the sex crimes case.

Sean "Diddy" Combs is standing trial on sex trafficking and racketeering charges in a case that has captured widespread attention.

Sean "Diddy" Combs' former girlfriend, Cassie Ventura, wrapped up four days of testimony Friday in Combs' trial for sex trafficking and racketeering in New York City. Dawn Richard, who is a member of the musical group Danity Kane,